Well indeed, but what is it about these products that enables them to be called cheese? Could it be that cheese is in fact a texture or a method f manufacture rather than a specifically milk-curd-whey combo?
I honestly don’t know and have always been puzzled at the idea of quince cheese.
From the dictionary:
cheese 1 (chz)
n.
1.
a. A solid food prepared from the pressed curd of milk, often seasoned and aged.
b. A molded mass of this substance.
2. Something resembling this substance in shape or consistency.
So in response to the OP, cheese made from curd, unless it is not made from curd but kind of feels the same.
Is vaseline for example, a cheese?